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April 6, 2021

H. Moser & Cie. Pioneer Tourbillon MEGA Cool

A flying tourbillon which augurs the return of summer: the Pioneer Tourbillon MEGA Cool from H. Moser & Cie. invites you to set sail immediately for the turquoise waters of paradise island lagoons. Escapism, and all the joy it brings, is guaranteed with this steel model, the height of elegance which can be worn anywhere, both on land or under water as it is water-resistant to 12 ATM. Equipped with a double hairspring, and offering a power reserve of three days, the Pioneer Tourbillon MEGA Cool model is a modern, contemporary reimagining of the tourbillon, adapted to the constraints of an active lifestyle. 

Refreshingly bright, the Pioneer Tourbillon MEGA Cool is a taste of the summer to come. Equipped to rise to any challenge, it is perfect for grabbing life with both hands. Its captivating Blue Lagoon fumé dial is adorned with the brand's logo at 12 o'clock, the height of discretion in transparent lacquer. Purity and minimalism are the watchwords for H. Moser & Cie., convinced that true connoisseurs buy a product for its intrinsic value and not for its brand. Featuring anthracite grey faceted applique indices topped with Super-LumiNova® markers, the Pioneer Tourbillon MEGA Cool has three-dimensional hands made from two sections, overlaid with strips of Globolight®, an innovative ceramic-based material which contains Super-LumiNova®. Emphasising legibility and comfort in its contemporary understated style, it features a steel case, as hard-wearing as it is elegant, and a domed sapphire crystal, water-resistant to 12 ATM.

At the heart of the Pioneer Tourbillon MEGA Cool beats a true marvel of ingenuity. The self-winding HMC 804 calibre is equipped with a double hairspring designed and produced in-house. Thanks to this pair of matched hairsprings, the movement of the point of gravity on each spring when it expands is corrected, significantly improving accuracy and isochronism in continual pursuit of perfection. In addition, the paired hairsprings also reduce the effect of friction normally experienced with a single hairspring, improving isochronism. Finally, the tourbillon's unique design makes it an interchangeable module, assembled and regulated independently of the movement via a simple plug and play system which allows for easy servicing. The result is a tourbillon better adapted to the needs of users in an era in which we jump from work to the gym, then home to family. The Pioneer Tourbillon MEGA Cool is perfect for our modern times, effortlessly combining aesthetics, elegance and modernity.

Technical specifications:

H. Moser & Cie. Pioneer Tourbillon MEGA Cool

Reference: 3804-1205

Limited edition of 50 pieces


  • Material: Solid steel
  • Diameter: 42.8 mm
  • Height without sapphire crystal: 10.8 mm
  • Curved sapphire crystal and see-through case back
  • Screw-in crown adorned with an “M”
  • Water-resistant to 12 ATM

Dial and hands

  • Blue Lagoon fumé with sunburst pattern
  • H. Moser & Cie. logo in transparent lacquer
  • Anthracite grey applique indexes, with hour markers in Super-LumiNova®
  • Anthracite grey hour and minute hands with Globolight® inserts


  • HMC 804 self-winding Manufacture calibre
  • Diameter: 32.0 mm or 14 1/4 lignes
  • Height: 5.5 mm
  • Frequency: 21,600 vph
  • Automatic bi-directional pawl winding system
  • Oscillating weight in 18-carat red gold with engraved H. Moser & Cie. logo
  • Power reserve: minimum of 3 days
  • Original double hairspring
  • One-minute flying tourbillon at 6 o'c


  • Hours and minutes

Strap and buckle

  • Textile, rubber or hand-stitched alligator leather strap, or steel bracelet
  • Steel clasp, with an engraved H. Moser logo


For more information, please visit h-moser.com

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